As the need to reduce our impact on the environment becomes increasingly pressing, people have worked to develop techniques to lower energy use and increase efficiency. While many of these solutions are expensive and complex, others are decidedly cheap and simple. So what is one of the latest energy-saving concepts to hit the scene? White roofs. White roofs reflect sunlight and heat back into the atmosphere while dark roofs absorb the heat and bring it into the building. Simply put, if every home and commercial building were to install a white roof, energy costs related to air-conditioning could be lowered by 20%. Nation-wide that equates to $1 billion in annual energy savings. Moreover, switching to lighter colored roads and sidewalks would double the energy savings. White is totally the new green.